it has been said与 it is said使用上有没有什么差别

it has been said与 it is said使用上有没有什么差别 与it has been said 类似的句子还可以怎么说?We are slaves to nothing but the clock,”it has been said.与这个用法相似的 In a word与as it has been said above有什么区别 It has often been said that life is difficult as it isas it is 如何理解 It has been said that everyone lives by seeling something.这句话中为什么不用一般现在时.it has been said 这部分. It has been said that everyone lives by seeling something.这句话中为什么不用一般现在时it has been said 这部分 it is said that he has been to shanghai,____ 反义疑问句怎么问 完成时的否定It has often been said这句话的否定是什么 It has been said that everyone lives by selling something.这句话的时态是什么? 高中英语选择it is said that __ Smith has been appointed manager填什么冠词 为什么 it has been since.用法 It has been in my it is/has been= It's has been accepted it has long been assumed it's always been you(It has always been it has been可以缩写成it's been it's been.的全称是不是 it has been...